Rotating shaft structure for a supporting frame

ABSTRACT

A rotating shaft structure for a supporting frame is used for supporting a thin computer or a plate screen. The rotating shaft structure includes a carrying base, a supporting arm, and a connecting base. The carrying base is fastened on a wall or a column. Bearings are placed into the first sleeve and the second sleeve located at the two opposite sides of the supporting arm. The carrying base is steadily pivoted with the supporting arm via the first locking assembly. The connecting base is steadily pivoted with the supporting arm via the second locking assembly. Because the bearings are placed in the first sleeve and the second sleeve, the first locking assembly and the second locking assembly are merely used as a locking element, and the bearing fully supports the rotating shaft when the supporting arm rotates. The connecting base is used for connecting with a thin electronic device.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a rotating shaft structure for a supporting frame. In particular, this invention relates to a rotating shaft structure for a supporting frame that is used for supporting a thin computer or a plate screen.

2. Description of the Related Art

In order to let users position thin electronic devices, such as plate computers, LCDs, LCD TVs and plasma TVs, on different locations or in different ways, such as on walls or ceilings etc, many supporting frames or hanging frames for supporting or carrying electronic devices have been developed.

FIG. 1 shows a rotating shaft structure for a supporting frame for supporting electronic devices of the prior art. The rotating shaft structure for a supporting frame includes a base board 7, a supporting arm 8, and a connecting board 9. At one side of the base board 7, there is an upper pivoting board and a lower pivoting flake 71. There are pivoting holes 72 on the pivoting flakes 71. There is a rotating shaft hole 81 on the supporting arm and the rotating shaft hole 81 is adjacent to the base board 7. A pivoting element 82 is plugged into the pivoting holes 72 and the rotating shaft hole 81, and is locked by a locking element 83. On another side of the supporting arm 8, there is also a rotating shaft hole 84. On one side of the connecting board 9, there is an upper pivoting flake and a lower pivoting flake 91. There are pivoting holes 92 on the pivoting flakes 91. A pivoting element 93 is plugged into the pivoting holes 92 and the rotating shaft hole 84 and is locked by a locking element 94.

The rotating shaft structure for a supporting frame is connected with the base board and the connecting board via a pivoting element and a locking element. By this connecting method, the pivoting elements on the two sides of the supporting arm have to overcome a side pressing force when the supporting frame supports the devices. This side pressing force forms a stress point between the pivoting element, the pivoting hole, and rotating shaft hole. When the supporting arm is rotated, wear and tear becomes worse. The pivoting element and the locking element both have to use a locking element and a rotating shaft. However, these functions are opposite to each other. When the supporting arm is locked tightly, it is difficult to rotate the supporting arm. When the supporting arm is locked loosely, the locking element easily drops.

SUMMARY OF THE INVENTION

One particular aspect of the present invention is to provide a rotating shaft structure for a supporting frame. It reduces the stress on the rotating shaft of the supporting frame and locks the supporting arm steadily.

The rotating shaft structure for a supporting frame includes a carrying base, a supporting arm, and a connecting base. The carrying base has a base board, an upper fixing base, and a lower fixing base. There is a through hole on the upper fixing base. There is a pivoting hole on the lower fixing base. The supporting arm includes an arm, a first sleeve and a second sleeve located at the two opposite sides of the arm, a bearing, and a first locking assembly. On the first sleeve and the second sleeve, there is a rotating shaft hole. On the two ends of the rotating shaft hole, there is a receiving space having a larger inner diameter and a shoulder part. The bearing is placed into the receiving space. The first locking assembly is composed of a pivoting shaft, a resisting ring, and a locking element. The connecting base is pivoted with the supporting arm, and includes a carrying board, two connecting flakes that are parallel to each other, and a second locking assembly. There are pivoting holes on the two connecting flakes. The second locking assembly is composed of a pivoting shaft, and a locking element.

The bearing is placed into the receiving spaces of the first sleeve and the second sleeve located at the two opposite sides of the supporting arm. The first sleeve that is adjacent to the carrying base is located between the upper fixing base and the lower fixing base of the carrying base. The carrying base is steadily pivoted with the supporting arm via the first locking assembly. The second sleeve that is adjacent to the connecting base is located between the two parallel connecting flakes of the connecting base. The connecting base is steadily pivoted with the supporting arm via the second locking assembly. Because the bearings are placed in the first sleeve and the second sleeve, the first locking assembly and the second locking assembly are merely used as a locking element, and the bearing fully supports the rotating shaft when the supporting arm rotates.

For further understanding of the invention, reference is made to the following detailed description illustrating the embodiments and examples of the invention. The description is only for illustrating the invention and is not intended to be considered limiting of the scope of the claim.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings included herein provide a further understanding of the invention. A brief introduction of the drawings is as follows:

FIG. 1 is an exploded perspective view of the rotating shaft structure for a supporting frame of the prior art;

FIG. 2 is an exploded perspective view of the present invention;

FIG. 3 is a perspective view of the appearance of the present invention;

FIG. 4 is a cross-sectional schematic diagram of the assembly of the present invention;

FIG. 5 is another exploded perspective view of the present invention; and

FIG. 6 is another cross-sectional schematic diagram of the assembly of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference is made to FIGS. 2, 3, and 4. The rotating shaft structure for a supporting frame includes a carrying base 1, a supporting arm 2, and a connecting base 3. The carrying base 1 includes a base board 11, an upper fixing base 12, and a lower fixing base 13. There are a plurality of fixing holes 111 on the base board 1, there is a through hole 121 on the upper fixing base 12, and there is a pivoting hole 131 on the lower fixing base 13.

The supporting arm 2 is pivoted with the carrying base 1. The supporting arm 2 includes an arm 21, a first sleeve 22 and a second sleeve 22′, a bearing 23, and a first locking assembly 24. In the first sleeve 22 and the second sleeve 22′ located at the two opposite sides of the arm 21, there is a rotating shaft hole 221. On the two ends of the rotating shaft hole 221, there is a receiving space 222 having a larger inner diameter and a shoulder part 223. The bearing 23 is placed into the receiving space 222. The first locking assembly 24 is composed of a pivoting shaft 241, a resisting ring 242, and a locking element 243. The lower side of the resisting ring 242 having a smaller diameter is placed into the through hole 121.

The connecting base 3 is pivoted with the supporting arm 2. The connecting base 3 includes a carrying board 31, two connecting flakes 32 and 32′ that are parallel to each other, and a second locking assembly 33. There are pivoting holes 321 on the two connecting flakes 32 and 32′. The second locking assembly 33 is composed of a pivoting shaft 331, and a locking element 332.

Reference is made to FIGS. 3 and 4. The bearing 23 is placed into the receiving space 222 of the first sleeve 22 and is located between the upper fixing base 12 and the lower fixing base 13. Next, the resisting ring 242 is located in the through hole 121. The pivoting shaft 241 passes through the resisting ring 242, the bearing 23, the rotating shaft hole 221 and the pivoting hole 131, and is locked with the locking element 243 so as to make the carrying base 1 be steadily pivoted with the supporting arm 2. Similarly, the bearing 23 also is placed in the receiving space 222 of the second sleeve 22′. Another end of the supporting arm 2 is located between the two connecting flakes 32 and 32′ located at one side of the connecting base 3. Next, the pivoting shaft 331 passes through the pivoting hole 321, the bearing 23, and the rotating shaft hole 221, and is locked with the locking element 332 so as to let the supporting arm 2 be steadily pivoted with the connecting base 3.

There is a spacer 34 between the bearing 23 and the receiving space 222. The spacer contacts the shoulder part 223. When the pivoting shafts 241 and 331 tightly lock with the locking elements 243 and 332, the spacer flexibly deforms. Therefore, there is a proper locking force and a resisting force on the sleeves 22 and 22′ when the supporting arm 2 rotates. The wear and tear between the bearing 23 and the shoulder part 223 is lowered and the contacting surface of the bearing 23 increases.

The two connecting flakes 32 and 32′ of the connecting base 3 have positioning holes 322. A safety cover 35 has a positioning column 351. The positioning column 351 is plugged into the positioning holes 322 and positioned at the positioning holes 322. The safety cover 35 has a ring wall 352 and the ring wall wraps around the two connecting flakes 32 and 32′ of the connecting base 3 so that the appearance of the rotating shaft structure for a supporting frame becomes more attractive and safer. Via the assembling process described as above, the rotating shaft structure for a supporting frame as shown in FIGS. 3 and 4 is formed.

Reference is made to FIGS. 5 and 6. The rotating shaft structure for a supporting frame further includes a second supporting arm 4 and a rotating shaft element at a connecting base 3′. There is a third sleeve 42 located at the arm 41 of the second supporting arm 4 that is adjacent to the supporting arm 2. The third sleeve 42 and the second sleeve 22′ also have a spacer 34 and a bearing 23. When the rotating shaft structure for a supporting frame is assembled, the second locking assembly 33 locks the second sleeve 22′ and the third sleeve 42. Next, a protection cover 36 is plugged into two sides of the second locking assembly 33. At another side of the second supporting arm 4, there are two connecting flakes 43 that are parallel to each other. The rotating shaft element 5 has a horizontal part 51 and a vertical part 52. The horizontal part 51 is pivoted with the two connecting flakes 32 and 32′ of the connecting base 3 via a horizontal locking assembly 53. The vertical part 52 is pivoted with the two connecting flakes 42 of the second supporting arm 4 via a vertical locking assembly 53.

In another embodiment, there is a fourth sleeve (not shown in the figure) at the second supporting arm 4 that is adjacent to the connecting base 3. The fourth sleeve is connected with the connecting base 3 via the second locking assembly 33.

The two connecting flakes 32 and 32′ of the connecting base 3′ have positioning holes 322 and the two connecting flakes 43 of the second supporting arm 4 have positioning holes 431. A safety cover 35 has a positioning column 351 and the positioning column 351 is plugged into the positioning holes 322 and 431 and positioned at the positioning holes 322 and 431 so that the appearance of the rotating shaft structure for a supporting frame becomes more attractive and safer.

The present invention has the following characteristics:

1. The first sleeve and the second sleeve located at the opposite two sides of the supporting arm have bearings. The carrying base is steadily pivoted with the supporting arm via the first locking assembly and the connecting base is steadily pivoted with the supporting arm via the second locking assembly. Because the bearings are placed in the first sleeve and the second sleeve, the first locking assembly and the second locking assembly are merely used as a locking element, and the bearing fully supports the rotating shaft when the supporting arm rotates.

2. There is a spacer between the bearing and the receiving space. The spacer contacts the shoulder part. When the pivoting shafts tightly lock with the locking elements, the spacer flexibly deforms. Therefore, there is a proper locking force and a resisting force on the sleeves when the supporting arm rotates. The wear and tear between the bearing and the shoulder part is lowered and the contacting surface of the bearing increases.

The description above only illustrates specific embodiments and examples of the invention. The invention should therefore cover various modifications and variations made to the herein-described structure and operations of the invention, provided they fall within the scope of the invention as defined in the following appended claims. 

What is claimed is:
 1. A rotating shaft structure for a supporting frame, used for supporting a thin computer or a plate screen, comprising: a carrying base having a base board, an upper fixing base, and a lower fixing base, wherein, there is a through hole on the upper fixing base and a pivoting hole on the lower fixing base; a supporting arm having an arm, a first sleeve and a second sleeve located at the two opposite sides of the arm, a bearing, and a first locking assembly, wherein there is a rotating shaft hole in the first sleeve and the second sleeve, and there is a receiving space having a larger inner diameter and a shoulder part at two ends of the rotating shaft hole, wherein the bearing is placed into the receiving space, the first locking assembly is composed of a pivoting shaft, a resisting ring, and a locking element, the first sleeve embedded in the bearing is located between the upper fixing base and the lower fixing base, the resisting ring is located at the through hole, wherein the pivoting shaft is plugged into the resisting ring, the bearing, the rotating shaft hole and the pivoting hole, and is locked with the locking element to make the carrying base be steadily pivoted with the supporting arm; and a connecting base pivoted with the supporting arm, and having a carrying board, two connecting flakes that are parallel to each other and a second locking assembly, wherein there are pivoting holes on the two connecting flakes, and the second locking assembly is composed of a pivoting shaft, and a locking element, wherein the second sleeve embedded with the bearing is placed between the two connecting flakes located at one side of the connecting base, and the pivoting shaft is plugged into the pivoting hole, bearing and the rotating shaft hole, and is locked with the locking element to make the supporting arm be steadily pivoted with the connecting base.
 2. The rotating shaft structure for a supporting frame as claimed in claim 1, wherein the base board of the carrying base comprises a plurality of positioning holes.
 3. The rotating shaft structure for a supporting frame as claimed in claim 1, wherein there is a spacer between the bearing and the receiving space, and the spacer contacts the shoulder part.
 4. The rotating shaft structure for a supporting frame as claimed in claim 1, wherein the two connecting flakes of the connecting base comprise a positioning hole that is positioned to a positioning column of a safety cover, and the safety cover has a ring wall wrapping around the two connecting flakes of the connecting base.
 5. The rotating shaft structure for a supporting frame as claimed in claim 1, wherein the supporting arm has a second supporting arm and the connecting base has a rotating shaft element, there is a third sleeve located at the arm of the second supporting arm that is adjacent to the supporting arm, both the third sleeve and the second sleeve have a spacer and a bearing, and the second sleeve and the third sleeve are locked together by the second locking assembly.
 6. The rotating shaft structure for a supporting frame as claimed in claim 5, wherein a protecting cover is plugged into two sides of the second locking assembly locking the third sleeve with the second sleeve.
 7. The rotating shaft structure for a supporting frame as claimed in claim 5, wherein there is a fourth sleeve located at one side of the second supporting arm that is adjacent to the connecting base, and the second supporting arm is pivoted with the connecting base via the second locking assembly. 